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  2. International Prototype of the Kilogram - Wikipedia

    en.wikipedia.org/wiki/International_prototype_of...

    The only three verifications occurred in 1889, 1948, and 1989. For instance, the US owns five 90% platinum / 10% iridium (Pt‑10Ir) kilogram standards, two of which, K4 and K20, are from the original batch of 40 replicas distributed in 1884. [Note 4] The K20 prototype was designated as the primary national standard of mass for the US. Both of ...

  3. List of countries by exchange rate regime - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    US Dollar (37) Euro (28) Composite (8) Other (9) No separate legal tender (16) Ecuador El Salvador Marshall Islands Micronesia Palau Panama Timor-Leste Andorra Monaco San Marino Vatican City Kosovo Montenegro Kiribati Nauru Tuvalu; Currency board (11) Djibouti Hong Kong ; ECCU Antigua and Barbuda Dominica

  4. Decimalisation - Wikipedia

    en.wikipedia.org/wiki/Decimalisation

    Decimalisation or decimalization (see spelling differences) is the conversion of a system of currency or of weights and measures to units related by powers of 10.. Most countries have decimalised their currencies, converting them from non-decimal sub-units to a decimal system, with one basic currency unit and sub-units that are valued relative to the basic unit by a power of 10, most commonly ...

  5. XE.com - Wikipedia

    en.wikipedia.org/wiki/XE.com

    Xe.com (Xe) is a Canada-based online foreign exchange tools and services company headquartered in Newmarket, Ontario.It is best known for its online currency converter application that offers exchange rate information, international money transfers, and other currency-related services via its website, mobile apps, and other online channels.

  6. French units of measurement - Wikipedia

    en.wikipedia.org/wiki/French_units_of_measurement

    During the early part of the twentieth century, the French introduced their own units of power – the poncelet, which was defined as being the power required to raise a mass of 100 kg against standard gravity with a velocity of 1 m/s, giving a value of 980.665 W. [16] [17] However, many other European countries defined their units of power ...

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  8. Quintal - Wikipedia

    en.wikipedia.org/wiki/Quintal

    In France it used to be defined as 100 livres (pounds), about 48.95 kg (108 lb), and has been redefined as 100 kg (mesures usuelles), thus called metric quintal with symbol qq. In Spain , the quintal is still defined as 100 libras , or about 46 kg (101 lb), but the metric quintal is also defined as 100 kg; [ 3 ] In Portugal a quintal is 128 ...

  9. Remove Banner Ads with Ad-Free AOL Mail | AOL Products

    www.aol.com/products/utilities/ad-free-mail

    SYSTEM REQUIREMENTS. Mobile and desktop browsers: Works best with the latest version of Chrome, Edge, FireFox and Safari. Windows: Windows 7 and newer Mac: MacOS X and newer Note: Ad-Free AOL Mail ...